Restructuring Costs (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Sep. 26, 2020	Jun. 27, 2020	Sep. 28, 2019	Sep. 26, 2020	Sep. 28, 2019
Restructuring and Related Activities [Abstract]
MEMS restructuring charges	$ 0	$ 352	$ 0	$ 352	$ 0

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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